Gravitrax Very VERY Long Rail

My grandkids wanted a REALLY long Gravitrax rail. My Bambu X1C can only print something about 250mm long, and a bit longer if I had printed diagonally. So I designed this rail system. Each piece is 4 standard rail lengths long which is about 235mm long. The pieces connect with a threaded connector piece on one end and a friction fit piece on the other. So in theory, you can use two end pieces and then as many middle pieces as you want.